gcc/testsuite/gcc.target/i386/hle-cmpxchg-acq-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-march=x86-64 -mhle" } */
   3 /* { dg-final { scan-assembler "lock;?\[ \n\t\]+\(xacquire\|\.byte\[ \t\]+0xf2\)\[ \t\n\]+cmpxchg" } } */
   4
   5 int
   6 hle_cmpxchg (int *p, int oldv, int newv)
   7 {
   8   return __atomic_compare_exchange_n (p, &oldv, newv, 0, __ATOMIC_ACQUIRE | __ATOMIC_HLE_ACQUIRE, __ATOMIC_ACQUIRE);
   9 }